Home / 7,965.50-10,991.34-4,428

Finding the Fourth Proportional to 7,965.50, 10,991.34 and 4,428

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Solution

The fourth proportional to 7,965.50, 10,991.34 and 4,428 is: 6,110.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.50 : 10,991.34 = 4,428 : x
  2. Step 2: Convert to fraction form
    7,965.50/10,991.34 = 4,428/x
  3. Step 3: Cross multiply
    7,965.50x = 10,991.34 × 4,428
  4. Step 4: Simplify right side
    7,965.50x = 48,669,653.52
  5. Step 5: Solve for x
    x = 48,669,653.52/7,965.50
  6. Step 6: Final answer
    x = 6,110.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.